U.S. Route 78 in South Carolina

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U.S. Highway 78

US 78 highlighted in red
Route information
Maintained by SCDOT
Length142.207 mi[1][2][3][4][5][6] (228.860 km)
Existed1927–present
Major junctions
West end US 1 / US 25 / US 78 / US 278 / SR 10 / SR 121 at the Georgia line near North Augusta
Major intersections
East endLine Street / King Street in Charleston
Location
CountryUnited States
StateSouth Carolina
CountiesAiken, Barnwell, Bamberg, Orangeburg, Dorchester, Charleston
Highway system
I-77 SC 79

U.S. Route 78 (US 78) is a 142.207-mile (228.860 km) U.S. highway that travels from Memphis, Tennessee to Charleston, South Carolina. In the U.S. state of South Carolina, it travels from the Savannah River at North Augusta to its eastern terminus in Charleston; connecting the cities of Aiken, Summerville, and North Charleston.

Route description

US 78 enters South Carolina by crossing the Savannah River in North Augusta; sharing concurrences with US 1, US 25, US 278 and South Carolina Highway 121 (SC 121). In the immediate 2-mile (3.2 km) area, it sheds most concurrencies, sharing only with US 1 towards Aiken; it also connects with Interstate 520 (I-520), which is a partial beltway around the Augusta metropolitan area. In Aiken, it travels through the downtown area, where US 1 splits north towards Columbia. West of Williston is SC 781, which connects back with US 278; the routing allows travelers to bypass Aiken all together between Williston and Augusta.[7]

Traveling in a southeasterly direction, it goes through the cities and towns of Williston, Blackville, Denmark, Bamberg, Branchville and St. George, where connects with I-95. Continuing east, it passes through Dorchester and begins to parallel with I-26 in a southeasterly direction through Summerville. It enters Charleston County at Lincolnville, where the highway skirts just inches south of the Berkeley County line. In North Charleston, US 78 shares a concurrency with US 52, as it connects with I-526. Entering Charleston, it splits with US 52 and goes south along King Street; its eastern terminus at Line Street, a block away from US 52's eastern/southern terminus and nearby to I-26/US 17 interchange.[7]

US 78 is a predominantly two-lane rural highway connecting much of the Lowcountry. Wider sections (four-lanes or more) are found between North Augusta–Aiken, St. George, and North Charleston. Though it provides the most direct route between Augusta (and points west, such as Atlanta) and Charleston (using US 278 and SC 781 to bypass Aiken), it is not a busy route because of the many cities and towns it goes through.[7]

History

Established in 1927 as an original US highway, it traveled closely as it does today; from North Augusta to Charleston, connecting the cities and towns of Aiken, Bamberg, St. George, and North Charleston.

By 1931, US 78 was rerouted north of Summerville and Lincolnville, leaving Richardson Avenue/Lincoln Avenue. Around 1939, US 78 was realigned from Meeting Street to Rivers Street, south of Durant Avenue in the Charleston area. Also in 1939, US 78 was fully paved in the state, its last unpaved section was between St. George and US 178. By 1952, US 78 was placed on new four-lane highway bypassing Clearwater, Burnettown, and Gloverville; also by same year a new bridge was constructed over the Savannah River, leaving Fifth Street Bridge. By 1967, US 78 was adjusted to bypass south of mainstreet Blackville, leaving a secondary road, but was later upgraded as a connector (signed as a business loop).[8][9]

Major intersections

CountyLocationmi[1][2][3]
[4][5][6]
kmDestinationsNotes
Savannah River0.0000.000





US 1 south / US 25 south / SR 121 south / US 78 west / US 278 west / SR 10 west (Gordon Highway) – Augusta
Continuation into Georgia
0.000–
0.005
0.000–
0.0080
South CarolinaGeorgia state line
AikenNorth Augusta0.188–
0.340
0.303–
0.547
5th Street Bridge / River North DriveInterchange
0.640–
0.710
1.030–
1.143

US 25 / SC 121 north – North Augusta, Edgefield
East end of freeway section; eastern end of US 25 and SC 121 concurrencies
0.8701.400

Buena Vista Avenue (SC 125 Conn. west) to I-20 / SC 230
Right-in/right-out interchange; westbound exit and entrance; eastern terminus of SC 125 Conn.[10]
1.560–
1.950
2.511–
3.138
I-520 (Palmetto Parkway) – Augusta, Columbia, AtlantaI-520 exit 17
Clearwater2.150–
2.380
3.460–
3.830

US 278 east / SC 125 (Atomic Road) – Beech Island, Savannah River Site

SC 421 north (Augusta Road) – Clearwater
Interchange; eastern end of US 278 concurrency; southern terminus of SC 421
ClearwaterBurnettown line4.0406.502 SC 126 (Belvedere–Clearwater Road) – Belvedere
Warrenville10.324–
10.330
16.615–
16.625
SC 191 (Main Street) – Graniteville, Vaucluse, Warrenville
Aiken12.30019.795







US 1 Truck north / US 78 Truck east / SC 19 Truck to SC 118 (Robert M Bell Parkway / Hitchcock Parkway) / I-20 / SC 302
Southern terminus of US 1 Truck; western terminus of US 78 Truck; to USC Aiken
12.47020.069
SC 421 south (Augusta Road)
Northern terminus of SC 421
15.62025.138 SC 19 (Laurens Street) – Eureka, Edgefield
15.80025.428
SC 19 Conn. (Chesterfield Street) – Savannah River Site
Signed also as SC 19
15.89025.572
US 1 north (York Street NE)
Eastern end of US 1 concurrency
18.25029.371

SC 4 east (Wagener Road) to SC 302
Western terminus of SC 4
18.45029.692






US 1 Truck north / US 78 Truck west / SC 4 Truck east / SC 118 south / SC 302 / I-20 (Pine Log Road SE)
Western end of SC 4 Truck concurrency; southern terminus of US 1 Truck; eastern terminus of US 78 Truck; northern terminus of SC 118
Windsor28.88046.478

SC 4 Truck east (State Park Road) – Aiken State Park, State Park Boat Landing
Eastern end of SC 4 Truck concurrency
34.15754.970
SC 781 west (Tinker Creek Road)
Eastern terminus of SC 781
BarnwellWilliston37.29760.024
SC 39 south (Rosemary Street / Dunbarton Road)
Western end of SC 39 concurrency
37.55060.431
SC 39 north (Elko Street / Springfield Road) – Springfield
Eastern end of SC 39 concurrency
Elko40.47065.130 SC 37 (Bay Street) – Barnwell, Springfield
Blackville46.93075.527

US 78 Bus. east (Walker Street)
Signed western terminus of US 78 Bus.
47.01075.655 SC 3 (Solomon Blatt Avenue) – Barnwell
47.09075.784
SC 304 south (Lartigue Street) – Hilda
Northern terminus of SC 304
47.54076.508

US 78 Bus. west (Main Street / US 78 Conn. west)
Eastern terminus of US 78 Bus./US 78 Conn.
BambergDenmark55.25088.916 US 321 / SC 70 (Palmetto Avenue) – Orangeburg, Barnwell
Bamberg61.96099.715 US 301 / US 601 – Orangeburg, Allendale, Ehrhardt
62.710100.922
SC 362 south – Smoaks, Williams
Northern terminus of SC 362
71.980115.841
SC 61 south (Edisto River Road)
Northern terminus of SC 61
72.170116.146
US 78 Conn. south to SC 61
Northern terminus of US 78 Conn.
OrangeburgBranchville76.660123.372
US 21 south (Freedom Road) – Smoaks, Walterboro, Savannah
Western end of US 21 concurrency
76.860123.694
US 21 north (Freedom Road) – Orangeburg, Columbia
Eastern end of US 21 concurrency
DorchesterSt. George89.810–
89.830
144.535–
144.567
I-95 – Savannah, FlorenceI-95 exit 77
91.830147.786 US 15 (Parler Avenue) – Walterboro, Santee
105.470169.738
US 178 west (East Main Street) – Harleyville
Eastern terminus of US 178
108.176174.092
SC 27 north (Ridgeville Road) – Holly Hill
Western end of SC 27 concurrency
108.664174.878
SC 27 south (Ridgeville Road) – Ridgeville
Eastern end of SC 27 concurrency
110.114177.211School Street west (SC 173 west) / Myers–Mayo Road eastEastern terminus of SC 173 and School Street; western terminus of Myers–Mayo Road
Summerville119.124191.711
US 17 Alt. (North Main Street) – Walterboro, Moncks Corner
119.404192.162 SC 165 (Berlin G. Myers Parkway / US 17 Alt. Truck) – Ravenel
CharlestonNorth Charleston126.114–
126.139
202.961–
203.001
I-26 – Columbia, CharlestonI-26 exit 205
127.534–
128.334
205.246–
206.534

US 52 west / N.A.D. Road east – Goose Creek, Moncks Corner
Western end of US 52 concurrency; western terminus of N.A.D. Road; interchange
129.224207.966

US 52 Conn. south to I-26 east – Charleston
Northern terminus of US 52 Conn.; I-26 exit 209A; no access to I-26 west
133.844–
134.034
215.401–
215.707
I-526 (Mark Clark Expressway) – Savannah, Mount PleasantI-526 exit 18
137.044220.551
SC 642 west (Dorchester Road)
Eastern terminus of SC 642
137.194220.792
SC 7 south (Cosgrove Avenue)
Northern terminus of SC 7
137.684221.581
US 52 east (Carner Avenue)
Eastern end of US 52 concurrency
Charleston142.207228.860

Line Street to US 17 north
No access from US 78 (King Street) or Line Street eastbound to westbound Line Street; eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  2. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  3. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  4. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  5. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  6. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  7. ^ a b c Google (May 23, 2013). "Overview map of US 78 in South Carolina" (Map). Google Maps. Google. Retrieved May 23, 2013.
  8. ^ General Highway Map, Barnwell County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1967. Retrieved April 11, 2014.
  9. ^ General Highway Map, Barnwell County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1987. Retrieved April 11, 2014.
  10. ^ Aiken & North Augusta Urban Area (PDF) (Map). South Carolina Department of Transportation. August 2019. p. Sheet 6. Retrieved September 12, 2020.

External links


U.S. Route 78
Previous state:
Georgia
South Carolina Next state:
Terminus